With high+interesting concept about exploring ghost+afterlife by science, however, as they almost reach the top of mountain, they take different turn and instead run to the cliff. (and fall really hard)
All good things go to the first 50 minutes, as Wee and Gla help each other to investigate and find the explanation of their experiment. Nice storytelling, scare tricks and good vibe enough to follow them and find out what happens next.
BUT after a turning point at the middle, seem like screenwriters might reach their dead-end (as they thought), instead continue to cross the line like what character says in the movie and go full fantasy sci-fi like TENET, they instead cross back to normal standard dumb psychological drama horror movie like 'The Promise (2017)' and 'The Swimmers (2014)'. Of course, GDH is a feel good movie studio, so happy ending, good moral always come first. The result? All good stuffs from first 50 minutes become wasted like it's 'nothing'.
So, for short. Not worth your time, but you really want to watch good part, watch until minute 56 and you can stop the movie right then.
